4.8 Article

A general and direct synthesis of imidazolium ionic liquids using orthoesters

Journal

GREEN CHEMISTRY
Volume 16, Issue 9, Pages 4098-4101

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4gc00684d

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Funding

  1. National Research Foundation [2013R1A1A1011793]
  2. Pusan National University Research Grant
  3. Research Fund Program of Research Institute for Basic Sciences [RIBS-PNU-2012-305, RIBS-PNU-2013-106]
  4. National Research Foundation of Korea [2013R1A1A1011793] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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A general method to synthesize halide and halide-free ionic liquids was developed. Direct alkylation of imidazole and pyridine derivatives was performed in the presence of an acid using an orthoester as the alkyl donor yielding ionic liquid products. Residual Cl and water contents of the ionic liquids were determined by ion chromatography and a Karl-Fisher test.

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